The document summarizes hydrocracking, which converts higher boiling petroleum fractions to gasoline and jet fuels using a catalyst. Key points include: - Hydrocracking involves hydrogenation and cracking reactions over a dual functional catalyst. - It allows refineries to meet demand for gasoline and jet fuel by processing heavier feedstocks like coker distillates. - The process involves hydrotreating to remove contaminants, followed by one or two hydrocracking reactors operating at high temperatures and pressures.